/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.172 - (hide annotations)
Thu Apr 24 04:14:41 2003 UTC (10 years, 11 months ago) by kaz
Branch: MAIN
Changes since 1.171: +13 -10 lines
Merging from mcvs-1-0-branch.

Improved error handling again in a flash of sanity. The whole
idea of ``bail'' as a restart is gone. All code which must perform
some complex cleanup action does so as part of normal unwinding.
And so termination becomes safe.

* code/update.lisp (mcvs-update): Change bail restart to continue.

* code/mcvs-main.lisp (*global-options*): Remove "error-bail".
(*usage*): Remove description of --error-bail.
(mcvs-execute): Bind *mcvs-error-treatment* to :terminate rather
than :bail if controlling TTY cannot be opened.

* code/move.lisp (mcvs-move): Change "Undoing move" error message
to "Undoing changes to map".

* code/add.lisp (mcvs-add): Get rid of bail restart; move cleanup
code into unwind-protect block.

* code/error.lisp (*mcvs-error-treatment*): Touch up docstring.
(mcvs-error-handler): Remove anything having to do with :bail.
Change description of `T' command to suggest that it is safe.

* code/options.lisp (filter-mcvs-options): Remove handling of
"error-bail" option.

* code/mapping.lisp (mapping-update): Get rid of outermost
restart-case, which had just a bail restart. Replace it with
unwind-protect block which does exactly the same restoration.
1 kaz 1.162 Release for Meta-CVS
2 kaz 1.1
3 kaz 1.142 Release ?.??, 200?-??-??:
4    
5 kaz 1.162 All Lisp symbols are in a package.
6 kaz 1.142
7 kaz 1.170 Release 1.0.7, 2003-0?-??:
8    
9     Revamped error recovery logic. To continue in an error situation now
10     consistently means ``take the bold action that may erase data''
11     or ``proceed in the most obvious way to finish the specified job''.
12 kaz 1.172 It never means ``roll back the operation and bail'', which was
13     confusing.
14 kaz 1.170
15 kaz 1.172 Termination is no longer unsafe; the `T' menu command, and the
16     equivalent --error-terminate global option perform all necessary
17     restoration and cleanup.
18    
19     Errors that have more information to print, like a list of files or
20     whatever, now indicate it in a standard way which translates to the
21     `I' menu command.
22 kaz 1.171
23     Chatter output goes to standard error rather than standard output,
24     as do all error messages.
25    
26     The interactive error menu now talks to the user using the controlling
27     tty, meaning that it will work even if the input or output of the
28 kaz 1.172 mcvs command are redirected. If no controlling tty is available,
29     then interactive error handling is disabled; the default behavior
30     is then like --error-terminate but can of course be overridden by
31     --error-continue.
32 kaz 1.171
33 kaz 1.169 Release 1.0.6, 2003-04-14:
34 kaz 1.166
35     The create command detects the existence of text editor backup files (or
36     other junk) in the MCVS directory after the editor is invoked on the
37     TYPES file. The user is prompted regarding their removal. If these files are
38     not removed, cvs import will bring them into the repository.
39    
40 kaz 1.167 When Meta-CVS has to split a large CVS command into two or more
41     invocations with shorter argument lists, it now does not stop when one of
42     these invocations is unsuccessful; it does all of them, and combines
43     their termination indications by a logical AND. There was a bug in this
44     logic also which caused, upon termination failure, a cvs command to be
45     repeated for the same list of files.
46    
47     Synchronization logic has been revamped. Unnecessary synchronizations
48     have been removed, which will make some commands run faster.
49     Synchronizations now have specific directions; for instance before
50     a CVS commit or update, changes are pushed from the directory tree to the MCVS
51     directory only, and after the CVS operation, in the reverse direction only.
52    
53     Meta-CVS will no longer re-create missing F- files by linking from the
54     directory tree. Doing this causes two problems. One is that if a user
55     manually removes a F- file and do ``mcvs up'', she wants CVS to fetch a clean
56     copy and push it into the tree. She does not want the file to be restored
57     from the tree prior to the CVS update. Secondly, sometimes CVS itself
58     removes files. If we re-create the files, CVS will consider them to
59     be ``in the way''.
60    
61     Failures to read from the MAP or MAP-LOCAL files are treated as interactive,
62     continuable errors. By continuing, the user agrees that the behavior will
63     be as if an empty map were read.
64    
65 kaz 1.168 The grab command uses less memory for performing move analysis.
66    
67 kaz 1.165 Release 1.0.5, 2003-02-25:
68 kaz 1.163
69     Bugfix: some one-argument command line options of CVS must be
70     specifies as a single parameter, with no separation between the
71     option letter and the argument characters. For example:
72    
73     cvs log -r rev-1::rev-2 # invalid
74     cvs log -rrev1::rev2 # correct
75    
76     Meta-CVS accepts either syntax, but it was generating the first form
77     when calling CVS. Now, *all* one-letter options that have an argument
78     are formatted in the second manner.
79    
80 kaz 1.164 Bugfix: one more waitpid() issue was fixed; on fast machines, under
81     Linux, it was observed that from time to time Meta-CVS would get
82     a -1/ECHILD when waiting for the CVS process.
83    
84 kaz 1.162 Release 1.0.4, 2003-02-20:
85    
86     Fix remaining occurences of the CVS ``No child processes'' abort
87     problem, affecting the list-branches command, merge command
88     and the -r option of the filt command.
89    
90     Release 1.0.3, 2003-02-12:
91    
92     ! THIS RELEASE IS WITHDRAWN. It was accidentally created from the
93     ! experimental main trunk of the Meta-CVS codebase, rather than
94     ! the 1.0 branch. But 1.0.4 does contain all of the changes
95     ! described here.
96 kaz 1.160
97     Fix for the CVS ``No child processes'' abort problem. It turns out
98     that CLISP sets the signal handling action for the SIGCHLD signal
99     to SIG_IGN, which is inherited by child processes across the
100     fork() and execvp() calls used in our mcvs_spawn() function.
101     We correct the problem by resetting the signal handler to SIG_DFL
102     just before executing the new process image.
103 kaz 1.161
104     New feature, --up option. The argument is a nonnegative integer value
105     (default is zero) which specifies how many sandbox nesting levels to
106     escape out of when locating the sandbox root. This helps work with
107     nested Meta-CVS sandboxes.
108 kaz 1.160
109 kaz 1.162 Release 1.0.2, 2003-02-10:
110 kaz 1.157
111     Bugfix in waitpid logic in the C library for running external processes;
112     we were not dealing with an interrupted waitpid.
113    
114 kaz 1.158 Behavior of mcvs tag is changed: when there are no filename arguments,
115     the whole tree is tagged including the metafiles. In other words, it
116     now works like the commit command.
117    
118 kaz 1.157 Release 1.0.1, 2003-01-30:
119 kaz 1.154
120     Hard link sync optimization: update of a subset of files, commit, and
121     other operations like log and diff don't need to synchronize all
122     hard links, just the ones operated on.
123    
124 kaz 1.155 The merge and remerge commands support -k option for overriding
125     CVS keyword expansion mode.
126    
127 kaz 1.156 Fixes to getcwd error handling.
128 kaz 1.157
129     Improvement in install.sh script's logic for locating CLISP installation
130     directory.
131 kaz 1.156
132 kaz 1.153 Release 1.0, 2003-01-01:
133 kaz 1.147
134 kaz 1.151 NOTE: It's not possible to upgrade to this release via mcvs-upgrade,
135     because it adds some new C functions to the Lisp executable.
136    
137 kaz 1.147 Security fix: read-time evaluation was not suppressed when reading
138     structured data, like MCVS/MAP and MCVS/TYPES. This means that it
139     was possible for Alice to check in something that would execute
140     arbitrary code on Bob's computer.
141    
142 kaz 1.148 Optimization: use fork and exec to launch CVS rather than CLISP's
143     run-program function, which indirects through the shell interpreter.
144 kaz 1.153 (On Cygwin, the spawnvp function is used).
145 kaz 1.148
146 kaz 1.149 Performance fix: stat() was being called superfluously by the
147     hard synchronization code, twice for each file.
148    
149 kaz 1.150 Build fix: install.sh works when CLISP executable is called ``lisp.exe'',
150     which is the case under Cygwin with newer CLISP releases.
151    
152 kaz 1.146 Release 0.99, 2002-11-17:
153 kaz 1.135
154 kaz 1.140 New link command for creating symbolic links.
155    
156 kaz 1.144 Global option -n (dry run---don't modify filesystem) is processed
157     internally now, not just passed to CVS.
158    
159 kaz 1.135 Failure to invoke text editor is handled.
160    
161 kaz 1.136 The -r option of filt is fixed; it has been broken since the change to the
162     new MAP format, because it was reading the raw map representation, not
163     passing it through the right conversion steps that are needed now.
164    
165 kaz 1.138 Bugfix to purge and remap commands: they were fooled by CVS-generated
166     files in the MCVS/CVS directory. Specifically, files having F- names, and a
167     the suffix ,t.
168    
169 kaz 1.141 Bugfix to add logic in directory restructuring: there was the possibility
170     of mistakingly taking a clobbered local file to be a new local version of
171     the added file, instead of replacing it. This could happen if the local
172     file had a future timestamp relative to the one coming from the repository.
173    
174 kaz 1.143 The prop command does not synchronize or write out map if no options are
175     specified.
176    
177 kaz 1.144 Help text added for move and branch commands. Help text for grab rewritten.
178 kaz 1.137
179 kaz 1.145 The CVSEDITOR and VISUAL environment variables are now checked, not
180     only EDITOR.
181    
182 kaz 1.134 Release 0.98, 2002-10-13:
183 kaz 1.128
184 kaz 1.133 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
185     which could cause information loss if the two differ. It now reads from MAP
186     and writes to MAP. (The property changes propagate to MAP-LOCAL by the
187     update operation invoked by prop, as before).
188    
189     Invocation of external programs included in debug trace.
190 kaz 1.128
191     The filt command does not filter F- names if they are immediately preceded by
192     the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
193     references to the actual F- links, rather than abstract references.
194    
195 kaz 1.129 The update command now supports the -C option, to fetch the repository
196     copy, throwing away local changes. It also now honors the --metaonly
197     and --nometa options.
198 kaz 1.130
199     The export command has been added, for checking out documents without creating
200     a working copy (no MCVS directory in the root of the checkout).
201 kaz 1.131
202 kaz 1.133 The watch command has been added. Note that its syntax differs from that
203     of CVS.
204 kaz 1.132
205     The watchers, editors, edit, and unedit commands have been added.
206 kaz 1.134
207     A script called mcvs-upgrade is now included, and installs alongside the mcvs
208     script. This allows the Meta-CVS Lisp image to recompile and patch itself,
209     giving users of binary distributions an easy way to upgrade from source
210     code.
211    
212 kaz 1.127 Release 0.97, 2002-10-06:
213 kaz 1.119
214     Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
215     (www.cygwin.com). It still relies on hard links, which requires
216     Windows 2000 or XP, and the NTFS filesystem. It probably won't
217     work over FAT.
218 kaz 1.120
219     New --debug option for verbose output.
220    
221     Cleaned up of error messages. Error messages don't specify prefixes like
222     ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
223     ``mcvs:'' prefix when printing the messages in a situation when the error is
224     not continuable.
225 kaz 1.119
226 kaz 1.121 Fixed bug introduced in release 0.13: mcvs add -R was adding only
227     directories, effectively ignoring arguments that are regular files.
228 kaz 1.122 The error-continuation behavior of mcvs add has been revised.
229 kaz 1.121
230 kaz 1.125 Trying to rename an object onto itself, or to move the sandbox root
231     directory are no longer silent no-ops, but produce an error.
232 kaz 1.123
233 kaz 1.124 The remap command now preserves property lists, and picks up changes
234     in executable permission.
235    
236     The grab command now notices when a file changes from having execute
237     permission to not having execute permission.
238    
239 kaz 1.126 Operations on the path . now work in a partial sandbox.
240    
241 kaz 1.118 Release 0.96, 2002-09-21:
242 kaz 1.110
243     The restore command was left broken during the change to the new
244     filemap format. It is now fixed.
245    
246 kaz 1.111 The grab command now handles execute permission bits properly.
247    
248 kaz 1.112 Some more commands have detailed help.
249    
250 kaz 1.113 There is now a global option -i which specifies a script to be
251 kaz 1.114 executed. This allows Meta-CVS to be scripted using Lisp. For
252     instance suppose you have the following script and call it
253     list-matching:
254 kaz 1.113
255     #!/usr/local/bin/mcvs -i
256     (in-sandbox-root-dir
257 kaz 1.114 (let ((mapping (mapping-read *mcvs-map*))
258 kaz 1.117 (test-func (eval (read-from-string (pop *args*)))))
259 kaz 1.114 (dolist (entry mapping)
260     (with-slots (path raw-plist) entry
261 kaz 1.117 (when (funcall test-func raw-plist)
262 kaz 1.114 (format t "~a~%" path))))))
263    
264     Then to list the names of files whose "importance" property is
265     a value greater than two, run:
266    
267     ./list-matching '(lambda (plist)
268     (let ((imp (getf plist :importance)))
269     (and imp (> imp 2))))'
270 kaz 1.117
271     WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
272     break as Meta-CVS is maintained. There is currently no published set of
273     stable interfaces.
274 kaz 1.113
275 kaz 1.109 Release 0.95, 2002-09-16:
276 kaz 1.104
277 kaz 1.107 The install.sh script no longer uses a borrowed copy of the clisp-link script
278     or the linkkit directory; these have been removed. These materials
279     are available at every CLISP installation; install.sh now finds them
280     and uses them. Users of non-x86 machines ran into problems because of this
281     because linkkit/clisp.h contains architecture-dependent information.
282 kaz 1.104
283 kaz 1.105 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
284     in the map.
285    
286 kaz 1.108 A more detailed help system now exists, though it's not complete. The ``mcvs
287     help'' command acts just like ``mcvs --help'' without any arguments. If given
288     an additional parameter which specifies a Meta-CVS command, it produces more
289     detailed documentation for that comand. Help exists already for a few
290     commands.
291    
292 kaz 1.107 The release number is being warped to 0.95, which means that Meta-CVS is now
293     in beta. It is only five updates away from a 1.0 release.
294 kaz 1.106
295 kaz 1.103 Release 0.24, 2002-09-08:
296 kaz 1.98
297 kaz 1.99 The mapping entries for both symlinks and files have extensible property
298     lists now. These are stored in the optional fourth and fifth list elements,
299     respectively of the :FILE and :SYMLINK map entries.
300    
301     Versioning of the execute permission of files is supported, represented as
302     the :EXEC property of a :FILE mapping entry.
303 kaz 1.98
304 kaz 1.100 Some lame syntax is provided for manipulating properties:
305    
306 kaz 1.102 mcvs prop --set foo --clear bar --remove baz main.c list.c
307 kaz 1.100
308     will set the property FOO to true, set the property BAR to false,
309     and remove the property BAZ, in the files main.c and list.c.
310     The execute permission is represented by the property EXEC.
311    
312 kaz 1.97 Release 0.23, 2002-09-02:
313 kaz 1.95
314 kaz 1.96 Bugfix: the grab command notices edited symlinks and incorporates the
315     changes into the mapping.
316    
317     The grab command now figures out moved symlinks. Moved symlinks are those
318     whose pathname has changed, but which continue to point to the same object
319     (which may also have been moved).
320 kaz 1.95
321 kaz 1.94 Release 0.22, 2002-08-31:
322 kaz 1.93
323     Symbolic links are now versioned objects. The format of the MAP file
324     changes to accomodate this; the new Meta-CVS will read old MAP
325     files; when it writes it will write the new format. Old Meta-CVS won't
326     read the new format.
327    
328     When a new module is created from an existing file tree, symbolic
329     links will be recognized and added. The add command will also add
330     symbolic links. Symbolic links can be renamed and moved; this does
331     nothing with their contents. They can point outside of the sandbox
332     using relative or absolute paths.
333    
334 kaz 1.94 TODO:
335    
336 kaz 1.93 There doesn't exist yet a special command to create symbolic links, nor to
337     retarget them; retargetting a link can be done manually by editing MCVS/MAP
338     and updating. Retargetting a link using the ln -s command, won't
339 kaz 1.94 backpropagate to the MAP file; an update will clobber the link.
340    
341     The grab command does not yet compute symbolic link moves; a moved symbolic
342     link is treated as a remove and add. This will be easy to fix.
343    
344     The remap command ignores symlinks.
345 kaz 1.93
346 kaz 1.92 Release 0.21, 2002-08-04:
347 kaz 1.88
348 kaz 1.89 Syntax of grab command changed. The branch is no longer specified as an
349     argument, but using the -r command option. If no revision is specified with
350     -r, then a -A must be specified to make the grab go to the main trunk. This
351     is a safety feature, since grabbing foreign snapshots to the trunk is almost
352     always wrong, though it could be useful during backup recovery, or for fixing
353     mistakes.
354    
355 kaz 1.91 The way operating system functions are targetted has changed. Instead of
356     relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
357     has its own module for calling foreign functions. This module is portable;
358     it does not depend on the layout of glibc data structures. So Meta-CVS
359     is in theory now portable to other Unixes (provided they have /dev/urandom).
360    
361 kaz 1.87 Release 0.20, 2002-07-27:
362 kaz 1.86
363     The commit command does a true global commit when given no file or directory
364     parameters, and not given the --metaonly option. This means commiting all
365     changes in the MCVS directory, even if they are in F-files that are not
366     currently mapped.
367    
368 kaz 1.85 Release 0.19, 2002-07-16:
369 kaz 1.81
370     When moving multiple files or directories to a subdirectory, a
371     restart is now provided to skip over bad ones and continue.
372    
373 kaz 1.83 Grab no longer scans files if there are only added files, or only removed
374     files. There are no moves to deduce in that case.
375    
376 kaz 1.84 Restore properly creates lost+found at the root of a partial sandbox,
377     rather than at the abstract root of the module.
378    
379 kaz 1.83 Some other algorithmic improvements made.
380 kaz 1.82
381     The first few sections of a user guide have been written.
382    
383 kaz 1.80 Release 0.18, 2002-07-07:
384 kaz 1.77
385 kaz 1.78 Cool new feature: checkout takes an extra argument, which specifies a
386     subdirectory of the project. Specifying a subdirectory results in a ``partial
387     sandbox'', whose root directory is the specified subdirectory of the larger
388     project. The rest of the project is ``invisible'' to that sandbox. A
389     subdirectory argument can also be given to mcvs grab, which will cause it to
390     integrate the new source tree against a subtree of the Meta-CVS project
391 kaz 1.79 rather than the entire project. The subtree doesn't have to exist; in
392     that case you get an empty sandbox. Adding files to this sandbox will cause
393     the tree to exist in the project.
394 kaz 1.78
395 kaz 1.77 Bugfix: mcvs grab was not computing moves properly over small file sets,
396     wrongly treating them as removes and adds.
397    
398 kaz 1.76 Release 0.17, 2002-07-02:
399 kaz 1.71
400     The create command no longer takes a vendor branch. Instead the symbol
401     ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
402    
403 kaz 1.72 The grab command no longer does useless synchronization on files that
404     are about to be deleted.
405    
406 kaz 1.75 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
407     that have no mapping.
408    
409     New restore command; re-enters deleted files into the mapping, under
410     the ``lost+found'' directory, using their F- names as sandbox names.
411 kaz 1.73
412 kaz 1.74 Bugfix: when a checkout bails because it is requested over top of an existing
413     working copy, it must not delete that working copy's MCVS sub directory.
414    
415 kaz 1.70 Release 0.16, 2002-06-29:
416 kaz 1.67
417     Added new heuristics to grab command. Paths are analyzed to determine
418     move distance. Greater distances reduce the confidence in a move.
419     These rules help sort out grabs in a project where similar or
420     duplicate files are subject to parallel moves, the ambiguity being
421 kaz 1.68 resolved by favoring shorter moves. Word comparisons are case-insensitive
422     now. Common words (those that appear in many files) are ignored when
423     comparing files.
424 kaz 1.67
425 kaz 1.69 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
426     up a little bit. Most reporting commands like log or diff no longer
427     operate on meta files by default; they must be explicitly told to do
428     so with --meta or --metaonly. Only the commit command implicitly includes
429     metafiles by default, and so if this is not wanted, --nometa must be
430     selected. The update command remains special; if it is given file
431     arguments, it does not include meta files. If given no arguments, it
432     does a global CVS up across the entire project.
433    
434 kaz 1.66 Release 0.15, 2002-06-25:
435 kaz 1.61
436 kaz 1.65 Optimized a string splitting routine which is used heavily for processing
437     paths; the result is a noticeable performance improvement in some commands
438     that process large numbers of files.
439 kaz 1.61
440 kaz 1.62 Renamed ``import'' command to ``create''.
441    
442 kaz 1.65 Bugfix: checkout and create showed errors when removing directory, due to
443     broken :postorder support in directory walking function.
444 kaz 1.63
445 kaz 1.65 Bugfix: on failure, checkout was failing to delete the MCVS directory when
446     the checkout was directed to an existing directory.
447    
448 kaz 1.66 New feature: ``mcvs grab'' command imports third-party snapshots to a
449 kaz 1.65 branch. This is invoked in the root directory of the source tree to import.
450     It determines what files have been added and removed in the snapshot, and
451     tries to compute which removes and adds are actually moves. This is done by
452     analyzing the actual contents of the files according to a crude algorithm to
453     do fuzzy comparisons, so that even files which were modified as well as moved
454     are discovered.
455 kaz 1.64
456 kaz 1.60 Release 0.14, 2002-06-21:
457 kaz 1.59
458     Bugfix: mcvs add was broken for files that have no suffix, causing
459 kaz 1.60 the underlying cvs add to fail. This was broken in 0.7 when type
460     handling was added.
461 kaz 1.59
462 kaz 1.58 Release 0.13, 2002-06-06:
463 kaz 1.55
464     Sandbox synchronization now handles the case of two files having
465     the same timestamp. An error is signaled, with interactive resolution
466     to synchronize either way, or do nothing.
467    
468 kaz 1.56 If a file must be deleted on update, and this cannot be done, it
469     is now a continuable error.
470    
471     Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
472     whose suffix is one of the ones cvs ignores by default.
473    
474 kaz 1.57 New command: mcvs remap. The user can move or delete files directly without
475     going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
476     moves and deletions, and reconstruct the mapping accordingly; that is,
477     it remaps the new structure. This command uses inode numbers to identify
478     files; if a file is copied and then the original is deleted, that won't
479     be recognized as a move.
480    
481 kaz 1.53 Release 0.12, 2002-04-18:
482 kaz 1.51
483     Bugfix: remove was broken in 0.10, fixed now.
484    
485 kaz 1.54 Bugfix: status, diff, etc. work in empty project rather than complaining
486     ``. not known to Meta-CVS''.
487    
488 kaz 1.52 The checkout operation now can now populate an existing directory, including
489     the current working directory (mcvs co -d . modulename). Of course, the
490     target directory cannot be an existing Meta-CVS sandbox.
491     This is a useful feature, which allows sandboxes to blend with an
492     existing directory structure.
493    
494     Checkout now uses the same function for generating the sandbox
495     structure as does update. This is now necessary, because local files
496     can be clobbered by the checkout.
497    
498 kaz 1.50 Release 0.11, 2002-04-12:
499 kaz 1.46
500     Bugfix: when branch invokes rtag, it now takes the CVSROOT information
501     from CVS/Root and passes it via -d. This is necessary because rtag does not
502     look at a local CVS subdirectory for this information, only the
503     -d option or the environment variable.
504    
505 kaz 1.48 Command for listing branches added (list-branches or lb). Also shows
506     what sticky tag the sandbox is updated to.
507    
508     Command for switching branches added (switch or sw).
509    
510     Merge detects that working copy is on non-branch tag and bails.
511 kaz 1.47
512 kaz 1.49 Absolute paths can now be specified as file arguments. These are
513     based from the root directory of the sandbox, not the actual filesystem root
514     directory.
515    
516 kaz 1.45 Release 0.10, 2002-04-03:
517 kaz 1.44
518     Automatic merging implemented. Branch is created using branch command,
519     and merging from another branch is done using simple merge command.
520     Meta-CVS maintains the tags to keep track of what has been merged
521     from what branch to what branch.
522 kaz 1.40
523     Bugfix: checkout -d foo bar was complaining about directory bar already
524     existing, even though it should only care about foo.
525    
526 kaz 1.41 The remove command now requires explicit -R option to recursively remove
527 kaz 1.42 a directory. It has more detailed error reporting.
528 kaz 1.41
529 kaz 1.43 The move command has better error reporting.
530    
531 kaz 1.39 Release 0.9, 2002-03-14:
532 kaz 1.37
533     Bugfix: the .cvsignore file is now subject to tagging, status, etc,
534     (unless --nometa is specified, of course).
535 kaz 1.38
536     The mcvs filt command takes -r <revision> or -D <date> parameters.
537     This means to retrieve the MAP file as of the specified revision or
538     date and use that mapping to perform the filtering translation,
539     rather than using MAP-LOCAL.
540 kaz 1.39
541     The mcvs update command takes filename arguments now and also
542     supports the -p option.
543 kaz 1.37
544 kaz 1.36 Release 0.8, 2002-03-13:
545 kaz 1.28
546 kaz 1.29 Bug fixed in mcvs add; it was not ignoring files that are already
547     listed as :ignore in MCVS/TYPES.
548    
549 kaz 1.34 Bug fixed in mcvs move: a target with a trailing slash is now treated
550     as a directory (if it does not already exist and is a non-directory).
551    
552 kaz 1.30 The -d option of mcvs checkout can now be used to override the checkout
553     directory, which is normally the same as the module name.
554    
555 kaz 1.31 The global options --version, --help, -q, -Q and -e are now supported.
556    
557 kaz 1.33 New global options --error-continue and --error-terminate to disable
558     interactive error handling in two different ways.
559    
560 kaz 1.32 Log level of many messages has changed; many messages have been
561     relegated to debug level.
562    
563 kaz 1.35 The import command now creates a .cvsignore file containing the name
564     MAP-LOCAL.
565    
566 kaz 1.24 Release 0.7, 2002-03-09:
567    
568 kaz 1.27 The import command collects a list of the file suffixes and brings up
569     a text editor to allow the user to edit their CVS keyword expansion
570     behavior. This information is kept in a new metafile called TYPES. The
571     add command also updates TYPES; it identifies any suffixes which are new,
572     and brings up an editor. The F- files now carry suffixes, which
573     simplifies interfacing with CVS, and also allows cvswrappers to work.
574    
575     Recursive add works (mcvs add -R ...).
576    
577     New command line option --nometa allows metafiles to be excluded from
578     diff, tag, and other commands; without the option they are inserted
579     into the list of files to be processed.
580 kaz 1.25
581 kaz 1.27 The commit option now takes an optional list of files or directories,
582     just like tag, diff, and others.
583 kaz 1.26
584 kaz 1.23 Release 0.6, 2002-02-16:
585 kaz 1.19
586 kaz 1.27 The add operation was horribly broken in 0.5, it is fixed.
587 kaz 1.21
588 kaz 1.27 User can interactively select whether to clobber local files or leave
589     everything alone. Effects on the mapping file of a mcvs move are undone,
590     if the restructuring is rolled back, or raises a condition that leads
591     to termination.
592    
593     Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
594     during import, and specifies the CVS keyword expansion mode for files
595     having given suffixes, and can also tell Meta-CVS to ignore certain files
596     when importing or adding.
597 kaz 1.22
598 kaz 1.18 Release 0.5, 2002-02-10:
599 kaz 1.14
600 kaz 1.27 Much improved error handling. Filesystem rearranging code performs
601     sanity checks to prevent adds and moves from accidentally clobbering
602     local files. A rearranging gone bad can be rolled back. Effects
603     of a failed mcvs add can also be rolled back.
604 kaz 1.14
605 kaz 1.27 MAP-LOCAL is now sorted in the same way as MAP.
606 kaz 1.15
607 kaz 1.13 Release 0.4, 2002-02-04:
608 kaz 1.10
609 kaz 1.27 CVS is invoked using internal function resembling the xargs utility,
610     which ensures that multiple command lines are generated if necessary to
611     avoid surpassing the operating system limit on argument and environment
612     vector size. This is important when someone wants to diff or stat a
613     subdirectory, which requires Meta-CVS to pick out the individual files
614     at the CVS level.
615    
616     The tag, log, status and annotate commands are now available.
617    
618     The MAP file is sorted on F- file names now, not path names. This
619     improves merging, since files do not move within the file when
620     they are renamed.
621 kaz 1.12
622 kaz 1.5 Release 0.3, 2002-02-02:
623    
624 kaz 1.27 Process termination done is properly in top level handler, by a nonlocal
625     exit. The program properly indicates failed termination when it exits
626     due to an error condition.
627    
628     Corrections are made in the command line option processing. If z is an
629     option that takes an argument, and the argument is -zx, then x is
630     treated as the argument to the option. Long options arguments are
631     recognized properly, according to the --opt=arg convention. The option
632     processing is restructured. Most of the commands now take the
633     appropriate cvs command-specific options.
634    
635     The update algorithm performs dupe checking over the map, which could
636     happen during a merge.
637    
638     Some more bugfixing has been done to the move command. It was still not
639     handling right some cases of an unversioned file being clobbered. Also,
640     it wasn't renaming a directory containing just one file.
641    
642     I did some performance investigation for larger file sets, and
643     ended up rewriting the code that computes filesystem restructuring
644     changes and map duplicates.
645 kaz 1.5
646 kaz 1.4 Release 0.2, 2002-01-30:
647    
648 kaz 1.27 Changed official name from MCVS to Meta-CVS. The move command now
649     performs some filesystem tests so it does the right thing when a versioned
650     file is moved over a non-versioned file, or when a file is moved into
651     a directory not known to Meta-CVS. Factored out reading and writing of
652     map files into functions.
653 kaz 1.4
654 kaz 1.2 Release 0.1, 2002-01-28:
655    
656 kaz 1.27 Support for mcvs diff -u added. The -R option works for mcvs add command.
657     Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
658     mv command when copying a directory to an existing directory.
659 kaz 1.2
660     Release 0.0, 2002-01-27:
661 kaz 1.1
662 kaz 1.27 This is alpha software. It is not complete, and lacks documentation.
663     However, it is already usable in its present state and is being used for
664     version control by its author. If you can program in Common Lisp and would
665     like to help, take a look through the TODO file. Send me patches, ideas,
666     feature requests.

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